Published online by Cambridge University Press: 10 August 2017
We study a special class of quasi-cyclic codes, obtained from a cyclic code over an extension field of the alphabet field by taking its image on a basis. When the basis is equal to its dual, the dual code admits the same construction. We give some examples of self-dual codes and LCD codes obtained in this way.
The first and the last two authors were supported by NNSF of China (61672036), Technology Foundation for Selected Overseas Chinese Scholars, Ministry of Personnel of China (05015133), the Open Research Fund of National Mobile Communications Research Laboratory, Southeast University (2015D11) and Key Projects of Support Program for Outstanding Young Talents in Colleges and Universities (gxyqZD2016008). The fourth author was supported by China Postdoctoral Science Foundation funded project (2016M601991).